How to patch MobileInstallation 3.0 Firmware

[PhunkSession]

1. Go to “Cydia”.

2. Click on “Manage” tab on the bottom.

3. Now click on “Sources”

4. Click on “Edit” and then on “Add”. Type “http://cydia.hackulo.us” and click on “Add Source”.

5. After installation is completed. Search for “AppSync” in Cydia and install this application. This app will automatically patch your mobileinstallation file.

You should be now able to install all of your jailbroken apps on iPhone OS 3.0.

 

[gawildturkey]

Sorry to sound like a noob, which i am, but how do i install them? through itunes? or over ssh?
I'm lost at the moment trying anything and everything